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1 <br />15. March 24"', 2006 <br />COTTER CORPORATION ...File No. M-1984-014 <br />P. O. Box 700 <br />Nucla, CO 81424 <br />Notice ofDetermination OfDesipnated Mininn Operation Status <br />Cotter Corporation <br />Re: JD-8 Mine, Permit No. M--1984-014, Determination Of Designated Mining Operation Status <br />Pursuant to Hard Rock /Metals Rule 7.2.4 (a), The Division of Minerals and Geology hereby posts the <br />following Notice of Final Decision in the Monthly Agenda. <br />On July 27, 2005 the Division of Minerals and Geology noticed Cotter Corporation of an initial finding <br />that the JD-8 Mine fits the definition of a Designated Mining Operation (DMO) per Rule 7.2.1(1) of <br />the Hard Rock Rules and Regulations. The initial Finding was based on SPLP test results that showed <br />toxic-forming materials were present in the waste rock and ore chat is being deposited at the surface of <br />the operation. <br />Cotter Corporation notified the Division within 30 days on August 26, 2005 that it disputed the initial <br />findings and requested time to develop information and facts to support its case in accordance to Rule <br />7.2.4(1). The Division on September 2, 2005 acknowledged the dispute claim and set an initial date of <br />October 17, 2005 for submission of information and facts for Division review in the matter. Several <br />meetings, delays and extensions by both parties to collect and clarify the modeling reports and other <br />parameters lead to a final report being submitted to the Division on February 8, 2006. <br />__ 1 <br />The Division Staff has carefully reviewed the reports and modeling concerning the JD-8 Mine. The <br />Division finds that Cotter Corporation has not satisfactorily demonstrated that the operation is a <br />Non-DMO. Underground mining operations and deposition of materials on the surface appear to <br />create the potential to impact possible aquifers in the Entrada and Kayenta geological formations. <br />Information and modeling do not establish that the potential for groundwater harm does not exist. The <br />operator and the Division have a responsibility to ensure the water quality is not diminished any further <br />than what naturally occurs. Therefore. the Division affirms its initial designation of the JD-8 as a <br />DMO. Cotter may elect to gather additional groundwater information and detailed information on the <br />non-transmissiveness of the faults, which would support the modeling. This additional information <br />may lead to reconsideration by the Division of the DMO status. <br />